Rotary expansible chamber devices – Intermittently accelerated and receding members rotate in... – Each a working member
Patent
1993-03-19
1994-07-19
Look, Edward K.
Rotary expansible chamber devices
Intermittently accelerated and receding members rotate in...
Each a working member
418186, F01C 100, F01C 2100, F03C 200
Patent
active
053303334
ABSTRACT:
An indexing rotary actuator is provided for unidirectionally rotating an output shaft through a specific angle per each indexing operation accurately without cumulative error. A pair of symmetrical housing members are mounted together to form an actuator housing. Within the actuator housing are formed a main piston chamber and a clutch piston chamber. Within the clutch piston chamber, a pair of piston mounting rings are mounted opposing each other, wherein a pair of respective main pistons within the main piston chamber are affixed to outer diametrical surfaces of the piston mounting rings. Furthermore, a pair of clutch pistons are provided within the clutch piston chamber slidably supported along the output shaft within the clutch piston chamber. The main pistons are air or fluid powered to be rotatable about the annular main piston chamber. The opposing faces of the piston mounting rings include respective raised arcuate sectors which are cooperable to limit rotation of the main pistons within the main piston chamber through the specified angle per each indexing operation, thus limiting rotation of the output shaft. Application of pressurized air or fluid through inlet ports within a first or second end of the actuator housing serves to drive the main pistons within the main piston chamber and to drive the clutch pistons along the output shaft within the main chamber. The clutch pistons are therefore alternately engaged with the output shaft, thus alternately translating rotational energy of the main pistons to the output shaft.
REFERENCES:
patent: 1212649 (1917-01-01), Krikorian
patent: 1250569 (1917-12-01), Desmond
patent: 2657676 (1953-11-01), Mallinckrodt
patent: 2974645 (1961-03-01), Wik
patent: 3155013 (1964-11-01), Rumsey
patent: 3186383 (1965-06-01), Potter
patent: 3446120 (1969-11-01), Sneen
patent: 3995536 (1976-12-01), Tenfjord
patent: 4000959 (1977-01-01), Portugali
patent: 4132078 (1979-01-01), Akeret
patent: 4319551 (1982-03-01), Rubinshtein
"Shape-Memory Wires Switch Rotary Actuator" by M. J. Brudnicki, NASA Technical Briefs, Jul. 1992, pp. 72 and 73.
"Designing Energy-Efficient Pneumatic Circuits" by H. Fleischer, Hydraulics and Pneumatics, Jun. 1991 pp. 38 and 39.
"Goal for Fluid Power in the 1990's" by Dr. E. C. Fitch et al, Hydraulics and Pneumatics, Jan. 1992, pp. 71, 72 and 74.
Look Edward K.
Ryznic John
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